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Resistance to Drought in Desert Plants

Of the following mechanisms in desert plants which would be the least effective in resisting drought:

Dying back of root hairs during a dry season

Expansion of total leaf surface area

Ability to store large amounts of water

Shedding leaves during the dry season

Thick walled seeds

An explanation follows.

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When answering this question think of the consequences of each of these adaptations, and also try to think of desert plants that you may know of already, especially the cactus, a plant that is very well adapted to living in dry climates.

- If the plant cuts down on its root hairs, this ...

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This solution is comprised of a response of about 200 words which provides a better understanding of the topic of resistance to drought in desert plants.